Issue 09 was released on 15 March 2019. Enjoy the articles online or scroll down to view the magazine as a PDF.
Features
When Truchet met Chladni
Stephen Muirhead meets neither, as he explores waves, tiles and percolation theoryPlaying billiards with cue-bics
Yuliya Nesterova misses all the pockets, but does manage to solve some cubicsHiding in plain sight
Axel Kerbec gets locked out while exchanging keysIn conversation with Matt Parker
Interviewing Matt was a mistakeOπnions: Can a horse have an Erdős number?
Lucy Rycroft-Smith reflects on the use of this well-established measurementOn the cover: Harriss spiral
Find out more about the spiral trees on the cover of Issue 09Bells, braids and taxicabs
An adventure that starts with a morning of bell ringing and ends with a mad dash in a taxiThe phantom parabola
Zoe Griffiths investigates paranormal quadraticsCounting caterpillars
Peter Rowlett uses combinatorics to generate caterpillarsStriking the right chord
How big are these random shapes? Submit an answer for a chance to win a prize!
Fun
Prize crossnumber, Issue 09
Win £100 of Maths Gear goodies by solving our famously fiendish crossnumberDear Dirichlet, Issue 09
Coffee, Brexit and badgers are among the topics of discussion in this issue's Dear Dirichlet advice columnHoroscope, Issue 09
Mystic mug has some predictions for you...Top Ten: Chalkdust regulars
The definitive chart of the best Chalkdust regularsAcademic webpage checklist
Your guide to creating the optimal homepageWhat’s hot and what’s not, Issue 09
Fashion is fleeting, Chalkdust regulars are not.Which symbol are you?
Are you u or i? Am I? Who?Top ten vote issue 09
Vote for your favourite Chalkdust issuePage 3 model: Game of Thrones
Using graph theory to predict who will sit the iron throne
Printed versions
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